CompTIA Security+ Exam Prep

Answer: D - FM-200, NAF-S-III, and CEA-410 are gases that interfere with the chemical reaction of fire. These gases were introduced to replace halon, due to its damaging effects on the ozone and that concentrations greater than 10 percent are dangerous to people. Additionally, when used on extremely hot fires, halon degrades into toxics chemicals that are harmful to humans. Halon has not been manufactured since January 1, 1992, by international agreement. The Montreal Protocol banned halon in 1987 and countries were given until 1992 to comply with these directives. The most effective replacement for halon is FM-200, which is similar to halon, but does not damage the ozone.